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Title: src: elide heap allocation in structured clone implementation by addaleax · Pull Request #61703 · nodejs/node · GitHub

Open Graph Title: src: elide heap allocation in structured clone implementation by addaleax · Pull Request #61703 · nodejs/node

X Title: src: elide heap allocation in structured clone implementation by addaleax · Pull Request #61703 · nodejs/node

Description: Small perf improvement: $ node benchmark/compare.js --runs 100 \ > --old ./node-0da120f879 --new ./node \ > --filter structured-clone misc > comparison.csv && \ > npx node-benchmark-compare comparison.csv [00:02:15|% 100| 1/1 files | 200/200 runs | 3/3 configs]: Done confidence improvement accuracy (*) (**) (***) misc/structured-clone.js n=10000 type='arraybuffer' ** 1.81 % ±1.28% ±1.68% ±2.16% misc/structured-clone.js n=10000 type='object' * 0.62 % ±0.55% ±0.73% ±0.93% misc/structured-clone.js n=10000 type='string' *** 8.30 % ±1.46% ±1.92% ±2.47% Be aware that when doing many comparisons the risk of a false-positive result increases. In this case, there are 3 comparisons, you can thus expect the following amount of false-positive results: 0.15 false positives, when considering a 5% risk acceptance (*, **, ***), 0.03 false positives, when considering a 1% risk acceptance (**, ***), 0.00 false positives, when considering a 0.1% risk acceptance (***)

Open Graph Description: Small perf improvement: $ node benchmark/compare.js --runs 100 \ > --old ./node-0da120f879 --new ./node \ > --filter structured-clone misc > comparison.csv && \ > npx node...

X Description: Small perf improvement: $ node benchmark/compare.js --runs 100 \ > --old ./node-0da120f879 --new ./node \ > --filter structured-clone misc > comparison.csv &&am...

Opengraph URL: https://github.com/nodejs/node/pull/61703

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8846c7a src: elide heap allocation in structured clone implementation addaleax Feb 6, 2026 https://github.com/nodejs/node/pull/61703/commits/8846c7a152262525027053b34026446e678817c3
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